Whether using steel or aluminum rods, the Alecular material in Lunati Bearings allows a high degree of conformability compared to other race bearings and imbedability is four times greater. The fatigue point of Alecular material is 1100 degrees Fahrenheit while Babbitt overlay is 400 degrees Fahrenheit. These bearings will not flake, and thickness tolerance is held (0.0001). An excellent choice for drag, road, and oval track racing, Lunati Alecular Race Bearings are chamfered to fit Lunati Crankshafts.